A research center claims that more than 25 % of employees in a certain country have changed jobs in the past four years. In a random sample of 260 people from that country, 78 have changed jobs in the past four years. At alpha equals0.05 , is there enough evidence to support the center's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Upper H 0 and Upper H Subscript a . Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) A. At most nothing % of employees in the country have changed jobs in the past four years. B. More than nothing % of employees in the country have changed jobs in the past four years. C. nothing % of employees in the country have changed jobs in the past four years. D. The percentage of employees in the country who have changed jobs in the past four years is not nothing %. Let p be the population proportion of successes, where a success is an employee in the country who has changed jobs in the past four years. State Upper H 0 and Upper H Subscript a . Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) A. Upper H 0 : pgreater than or equals nothing Upper H Subscript a : pless than nothing B. Upper H 0 : pless than nothing Upper H Subscript a : pgreater than or equals nothing C. Upper H 0 : pless than or equals nothing Upper H Subscript a : pgreater than nothing D. Upper H 0 : pnot equals nothing Upper H Subscript a : pequals nothing E. Upper H 0 : pequals nothing Upper H Subscript a : pnot equals nothing F. Upper H 0 : pgreater than nothing Upper H Subscript a : pless than or equals nothing (b) Find the critical value(s) and identify the rejection region(s). Identify the critical value(s) for this test. z 0 equalsnothing (Round to two decimal places as needed. Use a comma to separate answers as needed.) Identify the rejection region(s). Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to two decimal places as needed.) A. The rejection region is zless than nothing . B. The rejection regions are zless than nothing and zgreater than nothing . C. The rejection region is zgreater than nothing . D. The rejection region is nothing less thanzless thannothing . (c) Find the standardized test statistic z. zequals nothing (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim. ▼ Reject Fail to reject the null hypothesis. There ▼ is not is enough evidence to ▼ reject support

A research center claims that more than 25 % of employees in a certain country have changed jobs in the past four years. In a random sample of 260 people from that country, 78 have changed jobs in the past four years. At alpha equals0.05 , is there enough evidence to support the center's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Upper H 0 and Upper H Subscript a . Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) A. At most nothing % of employees in the country have changed jobs in the past four years. B. More than nothing % of employees in the country have changed jobs in the past four years. C. nothing % of employees in the country have changed jobs in the past four years. D. The percentage of employees in the country who have changed jobs in the past four years is not nothing %. Let p be the population proportion of successes, where a success is an employee in the country who has changed jobs in the past four years. State Upper H 0 and Upper H Subscript a . Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) A. Upper H 0 : pgreater than or equals nothing Upper H Subscript a : pless than nothing B. Upper H 0 : pless than nothing Upper H Subscript a : pgreater than or equals nothing C. Upper H 0 : pless than or equals nothing Upper H Subscript a : pgreater than nothing D. Upper H 0 : pnot equals nothing Upper H Subscript a : pequals nothing E. Upper H 0 : pequals nothing Upper H Subscript a : pnot equals nothing F. Upper H 0 : pgreater than nothing Upper H Subscript a : pless than or equals nothing (b) Find the critical value(s) and identify the rejection region(s). Identify the critical value(s) for this test. z 0 equalsnothing (Round to two decimal places as needed. Use a comma to separate answers as needed.) Identify the rejection region(s). Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to two decimal places as needed.) A. The rejection region is zless than nothing . B. The rejection regions are zless than nothing and zgreater than nothing . C. The rejection region is zgreater than nothing . D. The rejection region is nothing less thanzless thannothing . (c) Find the standardized test statistic z. zequals nothing (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim. ▼ Reject Fail to reject the null hypothesis. There ▼ is not is enough evidence to ▼ reject support

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A research center claims that more than

of employees in a certain country have changed jobs in the past

four

years. In a random sample of

260

people from that country,

have changed jobs in the past

four

years. At

alpha

equals0.05

is there enough evidence to support the center's claim? Complete parts (a) through (e) below.

(a) Identify the claim and state

Upper H 0

and

Upper H Subscript a

Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice.

(Type an integer or a decimal. Do not round.)

At most

nothing

of employees in the country have changed jobs in the past

four

years.

More than

nothing

of employees in the country have changed jobs in the past

four

years.

nothing

of employees in the country have changed jobs in the past

four

years.

The percentage of employees in the country who have changed jobs in the past

four

years is not

nothing

Let p be the population proportion of successes, where a success is an employee in the country who has changed jobs in the past

four

years. State

Upper H 0

and

Upper H Subscript a

Select the correct choice below and fill in the answer boxes to complete your choice.

(Round to two decimal places as needed.)

Upper H 0

pgreater than or equals

nothing

Upper H Subscript a

pless than

nothing

Upper H 0

pless than

nothing

Upper H Subscript a

pgreater than or equals

nothing

Upper H 0

pless than or equals

nothing

Upper H Subscript a

pgreater than

nothing

Upper H 0

pnot equals

nothing

Upper H Subscript a

pequals

nothing

Upper H 0

pequals

nothing

Upper H Subscript a

pnot equals

nothing

Upper H 0

pgreater than

nothing

Upper H Subscript a

pless than or equals

nothing

(b) Find the critical value(s) and identify the rejection region(s).

Identify the critical value(s) for this test.

z 0

equalsnothing

(Round to two decimal places as needed. Use a comma to separate answers as needed.)

Identify the rejection region(s). Select the correct choice below and fill in the answer box(es) to complete your choice.

(Round to two decimal places as needed.)

The rejection region is

zless than

nothing

The rejection regions are

zless than

nothing

and

zgreater than

nothing

The rejection region is

zgreater than

nothing

The rejection region is

nothing

less thanzless thannothing

zequals

nothing

(Round to two decimal places as needed.)

(d) Decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim.

▼

Reject

Fail to reject

the null hypothesis. There

▼

is not

enough evidence to

▼

reject

support

the center's claim.

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